Rachmadini, H. S., A. Aman, and B. Paruhum Silalahi. “Determination of Critical Node in The Java Sumatra Kalimantan Submarine Cable Communication System”. Mathline : Jurnal Matematika Dan Pendidikan Matematika, vol. 8, no. 2, May 2023, pp. 521-32, doi:10.31943/mathline.v8i2.422.